Lifting attachment for harrows



March 24, 1931. E. c. BURR LIF'TING ATTACHMENT FOR HARROWS Filed June 2, 1928 4 Sheets-Sheet l Inventor Attorng March 24, 1931. E. c. BURR 1,797,319

LIFTING ATTACHMENT FOR HARROWS Filed June 2, 1928 4 Sheets-Sheet 2 Inventor Attorney March 24, 1931. E. c. BURR 1,797,319

LIFTING ATTACHMENT FOR HARROWS Filed June 2, 1928 4 Sheets-Sheet 3 Inventor Attornqy March 24, 1931. E. c. BURR LIFTING' ATTACHMENT FOR HARROWS Filed June 2, 1928 4 Sheets-Sheet 4 .222 aria/v v Wm B y Attarngy Patented Mar. 245 1931 Y 1 i f me .iemcmmm em ws ,"il hi's" invention relates; to harro-w attach;

mentsandhas for its principal object to pro- 'v'ide means 'for'l i'ftingjthe harrow; when desired, in order to' permit thetrash or other material collected by the harrow teeth durlng" a the operation thereof to be removed from the barrow.

vide anfattaehment of'this character which F Anuther ect'of the invention isto propractical construction, which is neat" and"at which maybe easily and quicklyattache'd in position to the 'h'arrow, without: necessitating any change' in the construction thereoLwhich is" relatively: inexpensive to manufacture,

' and otherwise well adapted'for the purpose for which the same isfintended.

"Other-"objects and'advantages reside in the "special constructionjand combination of the various elements comprising the invention, reference being had to the accompanym'g drawings, tormin'g apart hereof; wherein: I 'Figurel a topf planview showing the x device in operative positionupon theharrow.

" FigureZ 'isfa side elevational'view'of the attachment with theharrow shown in longitudinal sect on "and illustrating [the posl tiOIl. of the attachment whennotused for=1iftin'gi-theharrowi Figure 3 is a similar view illustrating the v position of theattachment after being initiallynioved into position in advance of the lift- I ing operation.

Figure 4 is a similar'view,showing the manner in which the attachment operates to lift the'harroW from the ground.

Figure 5 is a group perspective view ofthe attaching rods for securing the attachment to the harrow. V

Figure 6 is a perspective view of the lifting fork.

through one of the harrow toothsupporting rods and illustrating the U-bolts provided for ment thereto.

allvattaching the liftin'gforhand Figure 9 is a sectional View Referring-now to the drawing'inadetail,'

wherein for the'purpose of illustration I have disclosed the referred "embodiment ofx my invention, the numeral fidesignates a harrow of convent onal construction-having aa series rods 6,' carriedlby;the harrow, frame-75 HEX-q; tending-rearwardly fromwthe harrow at 'ap proximately theacenter thereof is a pair/of spaced apart-extension rods ShaVingLtIieir forwardends each with 'a'ho'ok-9, dispos'ed 1 about-onexof the tooth supporting rods fi, v V and secured thereto-bye bolt 10. The for} Ward ends 'of the extension rods-8 are dis- 7 posed runde'rthe next to the flast tooth-i supporting rod-6 and over the rearmost support- 'ing rod" 6', as clearly illustrated in Figures 2, 35'and 4 ofth'e drawings. The rods 8 are-seq attaching fthe'etensioi rod forithe time I Figure 8 is; a fragmentarysectional-view through the supporting bearing for pivotthrough the hookshaped end of one of theextension rods otspacedfparallel barrow-tooth supporting i jcure d to the ,rearmost tooth supporting rod r 6,,byla U-shaped bolt-11. TheeXtensiOnrods I 8 are thus arrangedat an upwardly andrar; wardlyfextendmg angle and have their rearv ends Iconnectedbya horizontally disposed- U-shaped bracket 12. The bracket 12 has a portion adj acent'its'ends'formed into a trans I versely extending groove-1 3, into vvh'ichfiis seatedjthe .bi'ghtjportion '14 of a U-shaped V I gripplng' lifting fork lfi, having its sides} or 8 arms or legs extending outwardly fromeach brackets lhaving the grooves thereof forming a bearing support for -the bight portion of said lifting'fork.

' The rear ends of the extension rodsf8 are attached'tofthebracket l2fbyrbolts 16 and c extendover the grooves 13so as to retain the bight p'ortion of "the lifting fork in said grooves. The parallel ends of the lifting fork :15 are of an "arcuate shaped formation 7 1 e ourvedinailine which is eccentric to the axis -Figure 7 isa transverse sectional view of theb ight portion and intermediate the ends of each is attached a 'V-shaped member 17; With-its end's egtel idingi a direction out;

7 side" ofv the grooves 13 in the bracket, the

' EDWARD o} izURR, orienting, KANSAS wardly from the outer curve of the ends of' saidliftingforkf The ends of the V-sha'ped member '17 I extend beyond the edge of'the lifting fork and form means 18, for engagement with the ground, ina manner as illustrated in Figure 3 of the drawing, for apurpose as will be hereinafter more fully explained. v

The sides of the Vfshaped member I7 are attached to the sides of the lifting fork by U-bo1tsl9. To the end ofon'e ofthe 'V- eeth of the harrow,-as illustrated in Figure 7 20f the drawings, I r

When the teeth of the harrow'collect an ac"- cuinulation'oft'rash or other'material during theirimovement over-the ground, it is desired to move the same therefrom, the cable 20 is pulled forwardly by the operator, thereby raising the'ends oflthe lifting fork upwardly antlperinitting oneof the. teeth '18 of the V-shaped member 17 to engage the ground. The continued forward movement of the harrow will cause the feet 18 to drag toward the rear, thus continuing to rotate the lifting fork within the grooves 13 of the bracket 12, until the feet 18 drag toward their rearmost position, whereupon. the arcuate shaped portion of the lifting fork willglide upon the ground and gradually lift the rear end of the extension rods 8, and as a consequence, the rear portion of the arrow upwardly until the ends of the-lifting fork are dragged rearwardly beyond the position shown. in Figure a, whereupon'the harrow will be permitted to drop again to its normal position.

It is obvious that theinventio'n' is susceptible offvarious changes and modifications, iv

without departing from the spirit or scope of the invention or sacrificing any of its advantages, and I accordingly claim all such forms of the device, to which I am entitled.

1. A lifting attachment for harrows comprising a pair of rigid spaced apart rods eX- tending-rearwardly from the harrow, with their forwardends attached thereto, a bearing bracket carried at the rear ends of said rods, aU-shaped liftingfork rotatably supported intermediate itsends upon-said bracket, said a V fork having its parallel-arms arranged in an arcuate formation and with their ends adapted to-normally drag over the ground rearwardly of the harrow, a pair of feet extending outwardly from the arcuate portion of said fork in spaced relation, and means operable from a position forwardly of the harrow for moving the fork forwardly in advance of the bracket, whereby to bring the feet into engagement with the ground, and subsequently dragging the fork rearwardly whereby to cause the harrow' to ride uponthe arcuate portion of the forkand temporarily liftthe harrow from the ground. v 2. A lifting attachment for a harrow com- 1 prising a csupport attachable to the harrow to extend re arwardly therefrom, a U-shaped lifter elementfo'r lifting the-rear end of the harrow having its bight portion pivoted on V the rear end of said support. and its legs curved throughout their length in an arc eccentric to the longitudinal axis ofthe biglit portionso that the radius of curvature increases toward the free ends of the legs wherebyto cause a gradual elevation of the liarrow when the lifting member is'drawn over the ground, and a plurality of spaced apart feetvon the legs of the lifter'element,

and a body interconnectingsaid feet and formingbraces for maintaining the'curvature of the said legs. 1 I it 3. A- lifting attachment for a harrow com prising asupportattachable to the harrow to extend rearwardly therefrom, a U-shaped lifter elen'ient'for lifting the rear endof the harrow pivotally connecte'd at itsbight por-' tion to'th'e rear end of said support, the legs of said lifter element being continuously and decreasingly curvedtoward their free ends wherebya gradualelevation of the V harrow may result from drawing the lifter element OVQIlZllQ ground, and a plurality of feet secured in spaced relation to the legs of the lifter element adapted to engage the ground andcause the rotation of the lifter element to bring the free ends of its legs into contact with the ground, a body connecting the inner ends of said feet'whereby to constitute a brace for maintaining the curvature of the legs. c

In testimony whereof I atfix mysignature.

. EDWARD C. BURR. 

